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10-05-2010, 03:42 PM | #351 |
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10-05-2010, 04:04 PM | #352 |
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10-05-2010, 04:45 PM | #353 |
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10-05-2010, 05:12 PM | #354 |
*** Banned ***
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10-05-2010, 05:25 PM | #355 |
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10-05-2010, 08:03 PM | #356 |
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10-05-2010, 08:04 PM | #357 |
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10-05-2010, 08:36 PM | #358 |
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10-06-2010, 10:22 AM | #359 |
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10-06-2010, 10:43 AM | #360 |
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10-06-2010, 12:11 PM | #361 |
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woot! Car should be here in about an hour or so.
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10-06-2010, 01:29 PM | #362 |
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So it's been a tad over an hour...is it back yet?
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10-06-2010, 02:29 PM | #363 |
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it is. I have plots to put up. Here's the run down:
18psi = max torque of 331lbs... at 3500 rpm 21-22psi = max torque of344 at 3700 rpm they were saying that the motor just can't breathe enough, and with proper mods will be a load of fun. A good example is TGV's. I think I'm the last 04 in existence that still has those in place. |
10-06-2010, 02:33 PM | #364 | |
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10-06-2010, 02:40 PM | #365 | |
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peak at 21-22 was 341 You can really see where things start to choke off with flow up top. Time to work on that. |
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10-06-2010, 02:50 PM | #366 |
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10-06-2010, 05:16 PM | #367 |
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10-06-2010, 05:52 PM | #368 | |
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What type of wheels on your car TiC? One thing I've noticed is when everyone looks at dyno graphs, they completely ignore wheels/tires/rotors and driveshaft(rare). You could have two identical setups that dyno the same amount...... then swap to lighter wheels/rotors/tires/driveshaft and see an increase of 40-50whp due to the loss of rotational mass. On the flip side, if another adds heavy wheels they could see a loss of 20-30whp easily. We should remember to ask about these mods when looking at dyno sheets, because it makes a huge difference. TiC, this is using the stock STi TMIC correct? Which is even more impressive if it is. Here's my own little "bench racing" for the day. We've seen the Litchfield LM450-S60 do around 350-360 on a EJ207 with light bolt-ons and 100RON (97-98 octane?). Now we have the Blouch 2.5 TS with Billet wheel making 340whp on 93 octane on a EJ257, and 360-370whp on a EJ207 with E85. Seems like the turbo's are pretty close in performance despite each of these being on different fuels . Figure $1600 to do the blouch after shipping and I think $2300 for the Litchfield turbo after shipping from the UK. $700 for what might be an extra 5-10hp if that.....maybe less.....I'll go with the Blouch. |
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10-06-2010, 06:14 PM | #369 |
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stock sti wheels
bridgestone re960as tires centric one piece rotors stock rear axles empi front axles stock driveshaft tmic is 08 stock so a little bigger than 04 stock. injectors are decapped stockers I don't remember the dyno. It's one that is decoupled as my center diff is still fubar'd. I know there's a lot more room in to top end and even the bottom if I can get the intake to track breathing better. VERY near term plans are to get the prototype MSI trailing arms on the car so we can test this weekend. Near term plans are: fix center diff better injectors (nicer spray pattern is a must compared to these) TGV turbo inlet (aps) later term plans are cams. kelford 264 would be good as it won't KILL my mid range and still give more lift than stock. Perhaps when a ringland goes on this motor since it is still stock with a good number of miles on it. |
10-06-2010, 06:51 PM | #370 | |
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Can't read too much into the low end on a dyno. Real world pull RPM vs. boost log or airboy tells a lot more of the story of how it actually performs unless you have a good database of tests on the ramp settings for the particular dyno. Though most dynos will spool later than the street, even if on the street, 330 at 3500 isn't bad at all for a 340 WHP turbo Last edited by Concillian; 10-06-2010 at 07:07 PM. |
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10-06-2010, 08:02 PM | #371 | |
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Numerous shops have done dynos back to back of cars with heavier wheels and noticed essentially 0% difference in whp. Lighter components do not lower the whp of a car, they take more time to accelerate, yes. If you did a dyno run in 1st gear that lasted 1.5 seconds, you would notice a difference, but when you do runs that take 10+ seconds the difference is negligible. |
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10-06-2010, 08:31 PM | #372 | |
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10-06-2010, 10:15 PM | #373 | |
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Rotational mass has an effect on WHP by reducing/increasing the drivetrain losses. I don't know what you've been reading. But every test I've read shows that a loss/gain of rotational mass has a large effect on WHP. Now a 19lb wheel vs 18lb won't notice a big difference. But a 24lb vs 18lb wheel will make a very big difference. Also..... you made a little typo, you meant to say "heavier wheels" Another thing, it's not "making" more power but freeing up lost power and making sure more engine power reaches the wheels. EDIT: Here are links to the tests. EVO/Rotors http://forums.evolutionm.net/evo-dyn...ht-rotors.html Wheels http://forums.nasioc.com/forums/show...vy+wheel+light CF driveshaft http://fliblog.wordpress.com/2009/02...iveshaft-test/ Last edited by LIQUIDSK8S; 10-06-2010 at 10:59 PM. |
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10-07-2010, 12:43 AM | #374 |
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It depends entirely on how the dyno works, so you're both half wrong, and you're both half right.
If the dyno calculates power by measuring the acceleration of the rollers over time, then adding heavier wheels will result in lower numbers. It takes more power to spin up the extra mass, so it takes longer. Another way to look at it is that the dyno only knows how much power made it to the rollers, it doesn't know how much power went into spinning up the drivetrain components. If the dyno calculates power by applying a variable load to the drivetrain, so that the drivetrain accelerates over a fixed time period, then the presence of extra rotating mass won't make much difference. There's probably other ways to make a dyno, but you get the idea. Dynos generally measure something that correlates to power or torque, and then calculate power and/or torque from what they observed. Extra drivetrain mass may or may not interfere with what's being observed, so it may or may not affect the results. Last edited by NSFW; 10-07-2010 at 12:49 AM. |
10-07-2010, 09:37 AM | #375 |
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looks good man get rid of the tgv and see what you can get, i dont think the heads are causing a problem, there are people making 500 on stock heads but i can agree with tgv being a problem would be nice to see 360-370 with like 400tq with this thing on e85
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